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-
- Useage:
-
- texture gradient surf1 surf2 [<GradShape>] [start stop] [<GradType>]
- [random]
-
-
- GradShape
- planar /* default */
- radial
- sperical
-
- GradType
- linear /* default */
- log
- revlog
-
-
- This texture blends two surfaces between two shapes in space. The
- default is to blend between two planes, starting a z = 0 and stoping at z = 1.
- The default is a linear blend between planes so that at z = .75 the surface
- will be .25*surf1 + .75*surf2.
- The GradShape option specifies the "shape" of the volume to which
- the texture will be applied. "planar" designates that the blend will be
- between two planes perpendicular to z axis. "radial" designates that the blend
- will be between two cylinders parralel to the z axis. "spherical" designates
- that the blend will be between two spheres centered at the origin.
- "start" and "stop" define the starting and stoping distances for the
- gradient. For the planar designation, the gradient will be applied from the
- z = start to the z = stop planes. For the radial designation, the gradient
- will be applied from the cyliners r = start to r = stop where r equals the
- distance from the z axis. For the spherical designation, the gradient will
- be applied for the spheres r = start to r = stop where r equals the distance
- from the origin.
- GradType specifies the type of blend. "planar" will produce a linear
- blend between the two surfaces. "log" will produce a logarithmic looking
- blend where the first surface is quickly changed to the second. "revlog" will
- produce the opposite of "log" and will slowly change the first surface to the
- second.
- "random" produces a blotchy gradient texture that is similar to the
- "blotch" texture.
-
- Any comments, bug reports, or suggestions for changes or improvements
- will be greatly appreciated.
-
- ---Larry Coffin
- lcoffin@clciris.chem.umr.edu
-
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-